Paper-bag machine.



PATBNTEDNQV. 3,1903. A. J. WIKANDER. -PAPER BAG MACHINE. APPLICATION FILED 00T. 2, 1902.

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110.743,124. l y PATBNT'BD Nov. 3, 1903.

A. J. WIKANDBR- PAPER BAG MACHINE.

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Tuo., msnmsfou o c TION FILED 00T. 2, 1902.

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PATENTED NOV. 3, 1903. A. J. WIKANDER.

PAPER BAG MACHINE. `APPLIGMION FILED 00T. 2, 1902.

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WITNESSES: 7 f6 05m/7M b ymwwc V ATORNE PATENTEDNOV. 3,1903.

` A. J. WIKANDER.

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-. ff/wn//V ..-m l f fl...\ T. 2.. M m G I Mm R n M m A w /V//7//// M m M wd@ M UNITED STATES` Patented November 3, 1903.

PATENT OFFICE.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters lfatent No. 743,124, dated November 3, 1903. Application filed October 2,1902. ,Serial No.125,655. (No model.)

To all whom it mag/concern;

in Paper-Bag Machines, of which the following is a specification.

My invention relates to machines for making paper-bags from continuously-moving webs of paper; and it consists of improved constructions and special consecutive arrangements of apparatus whereby it is designed to provide simpler and more rapidly operating machines, as hereinafter described, reference being made to the accompanying drawings, in which- Figure 1 is a vertical longitudinal section of my improved machine. Fig. 2 is a plan view. Fig. 3 is a plan view of two partlyconstructed bags in different stages of the process of manufacture. Fig. 4 is a plan view of part of apartly-constructed bag, illustrating another step of the process. Fig. 5 is a detail of a partly-constructed bag in central longitudinal section of Fig. 4. Fig. 6 is a side elevation of part of the machine in the same view as that ofv Fig. 1. Fig. 7 is a detail in elevation of the left-hand end of the machine as viewed from the line 7 7, Fig. 6. Fig. S is a vertical transverse section online S 8 of Fig. 6. Fig. 9 is a vertical transverse section on line 9 9 of Fig. 6. Fig. 10 is a perspective view of one of a pair of paper-webmargin folders employed as part of the means to shape the web in the form of a tube. Fig. 11 is a detail in vertical transverse section of the machine on line 11 11, Fig. 6. Fig. 12 is a vertical transverse section of the machine on line 12 12 of Fig. 6'. Fig. 13 represents a plan view of ingersfor turning over the inner bottom flap of the bag preparatory to the folding down of the outer pasted bottom flap and pressing the two fiaps in the final operation. Fig. 14 is a detail in longitudinal section of the machine on line 14 14 of Fig. 12. Fig. 15 is a detail in perspective view illustrating the principal operation in folding the bottoms of the bags. Fig. 16 is a detail in perspective view illustrating the final opera-` tion` in folding the bottoms.

At one end oi' a suitable frame A journalsupporting the paper-roll c, from which the web 7L, of which the bags are to be made, isv `to be drawn subject to a suitable controllingbrake B. Afrom said boxes Vfor supplying new rolls of The mandrel is readily removable paper one after another, andit carries centering-cones (l, one or both of which is or are removable and adjustable for properly applying and setting 'the paper-rolls, as usual, in such cases, and are therefore not represented in detail.

A guide-disk e is made fast to the mandrel b near one end, which works between guidejaws f, which are adjustable laterally by a screw g to direct the web h, which may diverge one way or the other as the tension of the edges varies.

The web h is drawn over suitable carryingrolls i and j, so as to bear near one margin against a pasting-disk lo at Z, Fig. 2, whereby as the two margins are subsequently fold ed together inthe form of atube said margins maybe pasted together. The said pasting-disk runs in a paste-holding trough m, suspended on arms fn., overhanging the end of the frame in a way whereby they may be adjusted from time to time to regulate the pressure of the disk on the paper web. From the carryingroll j the paper web passes over two rotating disks o, carried on the shaft p at a distance apart equal to the width of the tube to be made when pressed fiat, as in Fig. 3,the range of the web from the roll j being so directed that the overhanging margins are downwardly deected at q preparatoryto bein g completely folded under by the margin-folders q', located a little farther along the way, said folders consisting of the suitably-shaped plates q', one of which is more conspicuously shown in Fig. 10, said plates each having a slotted shank r for being adjustably bolted onto any suitable support, which in this example consists ofthe cross-plate 3,-supported by the standards t, mounted on the frame at u. A little in advance of these margin-folders q `a former-plate U is placed, over the edgesof which the folds are properly` defined. This former-plate is supported under its longitudinal center by a strip w, set up edgewise on -the cross-plate s, and in advance of the formel'- plate o and folders q' there are rotating cutters, one of which is a cutting-blade a2, lo-

cated over the paper web, and the other is a die or matrix y, located under the web and carried on shafts 1 and 2, respectively, and geared together by spur wheels 3 for acting in unison. These cutters make the .rst transverse cut 4 in the paper web in the way of separating the bags one from another, the said cut being only in the upper ply of the flattened tube of Fig. 3, and it is preferably curved, as at 5, to produce the usual notch in the upper edge of one side of the bag, which facilitates opening the bag; but this may or may not be the form of the cut, as desired.

In this example of my invention two oppositely-placed cutters are carried on each shaft to make two operations in each revolution; but more or less may be employed, the shafts being speeded accordingly. The lower cutter carrying shaft 2 is geared by bevelwheels 6, with a shaft 7 ranging along one side of the machine and geared by the bevelwheels 8 with the transverse shaft 9, which carries a spur-wheel 10, that gears with another transverse shaft 11, located directly over shaft 9, by a spur-Wheel 12, with which a pinion 13 on the driving-shaft 14 gears, said shaft 14 having a pulley 15 for the application of the driving-belt. The drivingshaft 14 carries a pinion 16 at the right-hand side of vthe machine that gears with an intermediate idler-pinion 17, mounted on a lever 18, having its fulcrum on the shaft 19 of the paper-web-feeding roll 20, over which is a pair of coacting feeding-rolls 21 on a shaft 22,

' geared with shaft 19 by the spur-pinions 23,

said shaft 22 being subject to adjustingscrews 24 for regulating the grip of the rolls on the paper web. In passing between these rolls the margins of the paper web, one of which has the strip of paste applied at Z, are stuck together more or less by the paste. The wheel 17 is detachably mounted for interchange of wheels of different sizes to vary the feed for making bags of different lengths. The lever 18 is provided with a handle 25 for convenience in shifting it, and it carries a clamp-screw 26, which traverses the curved slot 27, for setting it in different positions.

The shafts 9 and 11 carry angular dies 28 and cutters 29, respectively, for cutting the angular slits 30 through both plies of the paper tube, which completely sever the upper ply and form the bottom fiap 32 and partly sever the under ply, the intermediate part between the slits 30 being left uncut for facility of further feeding. These cuts also yform the bottom flap 33, that matches with flap 32, except cutting it off at 34, and they also form the edges z of the bottom corners 35. The said shafts also carry creasing-dies 84 85 to score or crease the bag-web at 39 for folding the upper ply over on said crease, as shown in Fig. 3. By this arrangement of angle-cutters for cutting both the marginal transverse cuts and the longitudinal slits together the machine is of simpler construction than when separate devices operating separately are used, and there is further simplification by the application of the creasing devices 84 and 85 to the same carriers. The iiap 32 thus cut free along the slits 30 naturally rises upward somewhat at the forward end as the cutters 29 withdraw, which I take advantage of for the application of simple means of turning over said iiap and folding the bottom corners 35 and subsequently pasting said corners and iiap 33, as shown in Fig. 3, preparatory to closing and sticking the several parts of the bottom, as follows: Directly following these angle-cutters is a iiapcatching and corner-folding plate 36, suspended from a supporting-yoke 37 by the shank 86, so that the front end will catch said iiap while the web-chain of partly-formed bags passes under it, a section of which is shown at h, Fig. 11, and, together with the said shank, fold it over on the line 39, Figs. 3 and 4, at the same time folding the bottom corners 35 on the lines 40 of said figures. Following this flap catcher and folder the web-chain passes under a pasting-roll 41, supported by a carrying-roll 42, for pasting the partly-folded bottoms, as indicated by the U -shaped dotted strip 43 in Fig., 3, said pasting-roll having peripheral pasting-ribs 44 of corresponding shape, to which the paste is supplied from a paste-box 45 by a pastefeeding roll 46, said paste-box being mounted at one end on the pivotal support 47 and on the adjusting-screws 48 at the other end near the roll 46.

The pasting-roll 41 is geared with lshaft 7 by the spur-wheel 49 on its shaft 50, spurwheel 51 on shaft 52 of the supporting-roll 42, and the bevel-wheels 53, and paste-feeding roll 46 is geared with spur-wheel 49 of the pasting-roll by the spur-wheel 54.

Following the pasting-roll are feed-rolls 54 and 55 for continuing the movement of the bag-web chain, and especially for pressing the folds along lines 40. The lower roll 54 is geared with feed-roll 2O by the chain belt 56, and the two rolls 54 and 55 are geared together by pinions 57.

Following the rolls 54 and 55 are rotating dies 58 for finally separating the bags by cutting off the flaps 33 on line 34, creasing-dies 59 for making the score or crease at 60, and other creasing-dies 61 for making the score or crease 62, on which the bottom flaps 32 and 33 are to be folded, respectively, to co mplete the bag. These dies are carried by the shafts 63 and 64, of which the lower one, 63, is geared by the bevel-wheels 65 with the shaft 7, and the two are geared together by the spur-wheels 66.

Directly after the score or crease 62 is made the flap 32 is folded over on said crease lupon the previously pasted bottom corners 35, which is accomplished by horizontally-rotating fingers 67, carried on the upright shafts 68, geared by the bevel-wheels 69 with the shaft 63. These fingers, being rotated in the direction indicated by the arrows in Fig. 13, swing under the end of the flap 32, which is upwardly deflected to some extent by the ICO IIO

effect of the creasing at line 62, so as to turn said flap over quickly, their motion in this operation being accelerated by said fingers being pivoted at to the hubs 7 2 of the shafts 63, by which they are carried, and said fingers are provided with a trailing arm 7l, running against a stationary cam 73, suitably located for effecting the forward thrust of the fingers at the proper time. The fingers 67 are returned to their normal positions after passing the cams by springs 74, one to each.

Directly after the last-described operation the end of iiap 33 which is also upwardly deflected to some extent by the effect of the creasing at line 60 rides over a stationary wire 75, (best shown in Figs. 14 and 16,) while the rest of the bag passes under said wire, which turns it over upon the back of flap 32, whereon having been previouslypasted, as before described, it is stuck and pressed down by the finishing and delivering rolls 76 and 77, into which the bag, being finished, reaches before being` cut off from the next succeeding bag, and following these rolls is a deflecting-roll S2, which directs the bags downward to the place for receiving them. The rolls 76 and 7 7 being geared together by spurpinions 80, are driven from shaft 52 by a.

chain belt 8l, and the deiiecting-roll S2 is driven by cords 83, carried by roll 77, which are also part of the means for so deflecting the bags.`

The consecutive order inwhich l have organized and arranged the elements of the machine for successive and for continuous rotary operation enables the same to be more simply and cheaply constructed and to operateto better advantage.

What I claim as my invention isl. The combination of means for feeding a paper web, paper-web-margin-deflecting disks o located next following the feeding mechanism, rotating cutters x for making theA median cut in the paper web partly forming and partly separating the bags one from another, said cutters located next following the margin-deiecting disks, former-plate c to define the lines of the marginal folds consisting of a plain flat plate located next following the cutters, folding-guides q located under the former for turning up the deflected margins directly against the former at its rear end, rolls 20 2l for pressing the folded margins located next following the former, and rotating angle-cutters 23 29 for cutting the margins of both plies transversely to the extremities of said previously-formed intermediate cuts,

and also at the same time cutting longitudinal slits intersecting the inner ends of said marginal transverse slits and directed rearwardly of the transverse slits as the bag-web feeds, said angle-cutters located next following the rolls for pressing the folded margins, and all constructed and arranged as described.

2. The combination with means for forml ing a attened paper tube and intermediately catcher and bottom-folder consisting of the.

plate 36 suspended from the supporting-yoke 37 by the shank 86 directly following the angle-cutters so as to catch the said flap and fold it over on lines 36 and also fold the bottom corners over on lines 40.

3. The combination with means for forming a iattened paper tube and interm ediately cutting the upper ply transversely at 4, rotating angle-cutters 2S 29 for cutting the margins at 3l of both plies transversely to the extremities of said intermediate cut, and also at the same time cutting longitudinal slits 30 intersecting the inner ends of said marginal transverse slits, and directed rearwardly of the transverse slits as the paper feeds, the fiapcatcher and bottom-folder 36 suspended over the paper web, and the pasting-roll 4l supported on the carrying-roll 42 and having the pasting-strip 43 for pasting the folded bottom corners and the exterior bottom flap, of rotatory cutting-dies 58 for severing the flap of the under ply remaining in connection with the previously-formed bag, creasing-dies 59 6l on the same corners with said cutting-dies 58 for at the same time creasing the iiaps and the bottom folds preparatory to completing the folding of the bottom, and the rotating shaft carrying said cutters and creasing-dies, all constructed, organized and operating in the order stated.

4. The combination with the cuttingoff dies, creasing dies, and bag web feeding mechanism, of the horizontally and continuously rotating flap-turning fingers following, reaching under and formed by overturning the flap moving along with the paper web.

5. The combination with the cuttingoff dies, creasing-dies and the` bag-web-feeding mechanism, of the flap-turning fingers having means for accelerating their movements while turning the aps.

6. The combination with the cutting off dies, creasing-dies, and the bag-web-feeding mechanism, of the fiap-turnin g lingers having means for accelerating their movements while turning the flaps, said means consisting of the fingers pivoted on the fin gercarrying heads and provided with a trailing arm, and a stationary cam.

7. The combination with the cuttingoff dies, creasing-dies, bag-web -feeding mechanism, and the pressing and discharging rolls, of the stationary wire flap-turner.

Signed at New York this 10th day of September, 1902.

ANDERS J. WIKANDER.

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